It is not certain whether ultrasound guidance offers a benefit for venous access of the arm for RHC; thus, we sought to assess the efficacy of ultrasound-guided venous access of the arm for RHC.
It is not certain whether ultrasound guidance offers a benefit for venous access of the arm for RHC; thus, we sought to assess the efficacy of ultrasound-guided venous access of the arm for RHC.
It is not certain whether...